Definition of meritorious adjective from the Oxford Advanced Learner's Dictionary

 

meritorious

 adjective
adjective
BrE BrE//ˌmerɪˈtɔːriəs//
 
; NAmE NAmE//ˌmerɪˈtɔːriəs//
 
(formal)
 
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deserving praise synonym praiseworthy Word Origin late Middle English (in the sense ‘entitling a person to reward’): from late Latin meritorius (from merit- ‘earned’, from the verb mereri) + -ous.
See the Oxford Advanced American Dictionary entry: meritorious